Acronym for Katie You're Stupid. Used when your basic friend Katie is being dumb.
Me: Oh you like that boy and he likes you!
Katie: Yeah, but I don't wanna date him.
Me: kys
by Imbasic September 16, 2017
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the original and best sexual lubricant on the planet
Back in the 60s my favourite night of the year was right after my wife had her Pap Smear done; the doctor lubricated the speculum with KY, and there was enuff left in her muff that I could just "glide til I cried"
by John R. December 9, 2003
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a girl who is extremely cute, amazing, funny, beautiful and a really great person. if you ever meet a ky, you should consider yourself the most lucky person on this whole planet
-I'm ky's friend

- BRO YOU'RE SO LUCKY. KY IS AMAZING WTF. HOW.
by Emokid2007 April 5, 2016
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